Grain measuring and weighing machine.



4 c. 1). CROMLEY. GRAIN MEASURING AND WEIGEING MACHINE.

APPLIGATION FILED JUNE 18,1907.

Patented Feb. 1, 1910.

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APPLIOATION FILED JUNE 18,1907.

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APPLIOATIOH FILED JUNE 18,1907. 948,289. Patented Feb. 1, 1910. 6SHEETS-SHEET 6.

UNITED STATES PATENT OFFICE.

CHARLES D. CROMLEY, OF ALAMEDA, CALIFORNIA, ASSIGNOR TO AUTOMATIC PACK-ING COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.

GRAIN MEASURING AND WEIGI-IING MACHINE.

Original application filed November 30, 1906, Serial No. 345,763.

Serial No. 379,550.

To all whom it may concern:

Belt known that 1, CHARLES D. OROMLEY, a citizen of the United States,residing at Alameda, in the county of Alameda and part connected withthe bagging apparatus.

State of California, have invented certain new and useful Improvementsin Grain Measuring and Veighing Machines; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same. a

This invention relates to grain measuring and weighing machines, and hasforan object to provide a device of the class especially adapted foroperation in association with a bagging machine and embodying new andimproved features of speed, reliability and accuracy.

A further object of the invention is to provide in a weighing machine,scale pans properly suspended from scale beams and with means fordischarging into the scale pan the major portion of the grain to beweighed, and with means for continuing to discharge a small amount untilthe exact amount is provided.

A further object of the invention is to provide in a weighing andmeasuring device a scale pan properly suspended and with a semi-cylinderdisposed upon rotation to discharge a predetermined amount of materialinto the scale pan and with an opening discharging into the scale panadapted to discharge a stream of material into the scale pan, suchopening being closed by the movementof the scale pan.

A. further object of the invention is to provide in a device of theclass, a plurality of semi-cylinders adapted to rotate and with a feedchamber disposeibetween the semicylinders, the communication betweenbeing controlled by slides to permit the introduction of a predeterminedamount of material to the semi-cylinders and means to rotate thecylinders alternately to discharge the con tained amount into a scalepan disposed beneath.

A further object of the invention is to provide in a weighing device abagging apparatus with a chute disposed to introduce mate- Specifieation of Letters Patent.

Patented Feb. 1, 1910.

Divided and this application filed June rial into the bagging device,and a scale pan disposed above and arranged to discharge material intothe chute, the said scale pan having a trapbottom controlled by a movingA further object of the invention is to provide in a weighing device ascale beam supporting a scale panin association with a bagging machine,and with means for locking the scale beam against movement while themajor portion of material is being. discharged into the scale pan and tounlock the scale beam to permit the movement thereof when the exactamount has been introduced into the scale pan.

With these and other objects in View, the invention comprises certainnovel constructions, combinations and arrangements of parts, as will behereinafter fully described and claimed.

In the drawings Figure 1 is a View in side elevation of a baggingmachine similar to the bagging machine forming the subject-matter ofco-pending application No. 345,763, filed Nov. 30, 1906, with theweighing apparatus associated therewith. Fig. 2 is a top plan view ofthe bagging machine and weighing device with a plan view of the cams foroperating the discharging apparatus. Fig. 3 is a vertical, sectionalview taken on line 33 of Fig. 2. Fig. 4: is an enlar ed detail sectionalview of the weig ing device taken on a plane substantia ly correspondingwith the plane of Fig. 3. Fig. 5 is a horizontal, sectional view takenon line 55 of Fig. 4. Fig. 6 is a detail perspective View of one of thescale apparatus. Fig. 7 is a top plan view of the segmental plateadapted to close the discharge opening from the semi-cylinders. Fig. 8is a detail view of the scale beam and associated parts shown broken.

Like characters of reference designate corresponding parts throughoutthe several views.

The weighing machine formingv the subject-matter of this application isa division of co-pending a plication No. 345,763, filed Nov. 30, 1906,or a bagging machine and is adapted especially for use in associationwith such a bagging machine, although it is to be understood that it maybe easily adapted for use in association with another mechanism.

The bagging) machine is here shown as comprising a ase 10 about theperiphery of which are erected a plurality of standards 11 supporting attheir uoper ends a top or covering member 12 preferably built in theform of an irregular spider, as shown in Fig. 2.

Centrally upon the base 10 is erected a shaft 13. The shaft 13 isrotated in any approved manner as by a gear 14 formed about the lowerend of the shaft and intergeared with a shaft 15 which receives motionfrom a pulley 16 through any approved train of gears, as 17. From thetrain of gears also extends the shaft 18 intergeared with and adapted tooperate a sewing mechanism 19 which said sewing mechanism forms thesubject-matter of a co-pending application No. 345,764, filed Nov. 30,1906. Upon the vertical shaft 13 is mounted a rotating table 20 adaptedto support and carry bags while being filled by filling tubes 21, whichsaid filling tube and their associate hoppers 22 o erate in the mannerdescribed in the app ication of which this is a division.

At any approved point upon the top plate 12 is erected a segmentalcasing 23 having mounted in the opposite curved ends semicylinders 24and 25 disposed with their axes parallel and vertical and rotated bymeans of shafts 26 and 27 respectively. The shafts 26 and 27,respectively, extend upwardly through the top of the casing 23 and areprovided, respectively, with gear wheels 28 and 29. Between thesemi-cylinders 24 and 25 is provided a chamber 30 supplied through aninlet passage 31 with the materialemployed and with a V-shaped orconical bafiie 32 having its apex angle disposed upwardly and inclineddownwardlyt-o guide material from the opening 31 from the opposite sidesand to the semi-cylinders 24 and 25. Between the chamber 30 and thesemi-cylinders are also mounted sliding plates 33 and 34 extendingupwardly through the top of the casing 23 and movable to permit apredetermined amount of material to flow beneath the said plates andinto position for engagement by the semicylinders 24 and 25.

The bottom ends of the semi-cylinders 24 and 25 are open provided withspiders 35 and 36 and with openings 37 and 38 in the bottom of thecasing 23 conforming substantially to the diameter of the semicylinders.

Beneath the openings 37 and 38 are disposed scale pans 39 and 39 and asegmental plate 40 provided at its ends with openings 41 and 42corresponding substantially in curvature with the openings 37 and 38 inthe casing 23. The segmental plate 40 is rigidly mountedupon a shaft .43journaled upon the top plate 12 in substantial parallelism with theshaft, 13.

The shaft 43 is given an oscillatory movement by means of a cam wheel 44carried upon the upper extremity by a shaft 45, which said shaft 45 isalso mounted in parallelism with the shaft 43 and 13. The shaft- 45receives motion from the shaft 13 by means of a pinion 46 mounted uponthe shaft 45 and engaging a beveled gear 47 carried upon a shaft 48which said shaft 48 also carries a pinion 49 intergeared with a gear 50carried upon the upper extremity of the shaft 13.

The shaft 43 receives motion from the cam 44 by means of a crank arm 51interengaging with the said cam wheel 44 and upon the said shaft 45 inaddition to the segmental plate 40 is also mounted a segmental gear 52engaging with the gears 28 and 29 and from which the said gears receivemotion. It will thus be seen that the segmental plate 40 and thesemi-cylinders actuated by the gears 28 and 29 move in timed relation.The bottom of the casing 23 is also provided with openings 53 and 54disposed immediately above a segmental opening 55 in the plate 40, sothat both of such openings continuously register with such segmentalopening. Above the openings 53 and 54 are disposed agitators 56 and 57mounted upon the shafts 58 and 59, which said shafts extend upwardlythrough the top of the easing 23 and are provided with gears 60intergeared with gear 61 mounted upon shaft 62, and from which theagitators receive ro tary motion. The shaft 62 is intergeared with ashaft 63 through the gears 64 which, in turn is intergeared with a shaft65 extending vertically without the lines of the machine, suchintergearing being accomplished by means of gears 66 and the shaft 65receiving motion from the pulleys 16 through the medium of gear 67, fromwhich it will be readily apparent that the agitators 56 and 57 areconstantly rotated.

The scale pans 39 and 39 are suspended within frames 68 and 68 carriedrigidly by the uprights 11 and provided with knife edges 69 and 69supportin frames 70 and 70. The frames 70 and 70 are, respectively;provided with knife edges 71 and 71' engaging blocks 72 carried upon theupper edge of the scale pans 39 and 39. As the scale pans 39 and 39' andtheir respective associate parts are similar each to the other. but onewill need be described, it being un derstood that the referencecharacters ap plied to such description apply to similar referencecharacters applied to the other scale devices and provided with primemarks. The scale pan is also provided with a knife edge 73 engaging anotch in the lower side of the frame piece 68 by means of which swingingmovementof the scale pan is prevented when the scale pan is at its upperextremity.

The scale pan is preferably provided in one corner with a plate 74providing an auxiliary or smaller chamber 75 beneath and registeringwith the openings 53 and 54 under the agitators 56 and 57 so thatmaterial discharged through the said openings 53 and 54 is dischargedinto the auxiliary chamber 75 instead of into the main chamber of thepan 39.

Extending outwardly from the bracket member 7 6, upon which is mounted ascale beam 77 by means of the knife edge 78 and provided with the usuallimiting stops and screws 79 and 80. The scale beam 77 is also providedwith an upwardly extending rightangular off-set portion 81 upon whichthe frame 70 bears by means of a bar 82 disposed between the saidoff-set portion 81 and an outwardly extending arm 83. It. will beobserved that the off-set portion 81 is disposed upon the opposite sideof the knife edge 78 from the counter-balance 84, so that the weightofthe scale pan 39 bearing upon the frame 71 is transmitted through thearm 83 to the off-set portion 81 to raise the counter-balance 84 whenthe material in the pan is of sufficient weight. Upon the bracket (38are also mounted curved arms 85 forming a bearing in which is journaleda shaft 86 extending transversely across above the scale beam 7 7 andupon which is mounted a bell-crank lever 87 having a pin or stud 88positioned to bear upon the top of the scale beam and lock itin depresedposition. The curved arms 85 also serve to journal a transverse shaft 89disposed below the arm 70 and in parallelism with the bar 86 and uponwhich is mounted an arm 90 engaging with and operating the bell-cranklever 87 by means of a slot 91 and interengaging pin 92. Upon the shaft89 is also mounted an arm 93 connected by means of a link 94 with abell-crank lever 95 pivoted at 90 upon the top plate 12 which saidbell-crank lever 95 communicates also by means of a link 97 with a lever98 pivoted at 99 and with its upper end in engagement with a cam 100carried upon the shaft- 45 below the cam wheel 44. It will thus be seenthat as the cam wheel 100 rotates with the shaft 45 the lever 98 ismoved upon its pivot 99 and the arm 93 and shaft 89 consequently movedrotatably. The movement of the shaft 89 will, as will be seen, move thearm 90 to alternately lock and release the scale beam 77 by means of thepin 88 bearing upon the top thereof and moving in timed relation thesaid scale beam is released after material is discharged from thesemi-cylinders 24 and 25 from the scale pan such locking being providedto prevent the movement of the scale pan under the impactof the largequantity of material discharged into the pan. After the material isdischarged into the pan, as above described, the scale beam is releasedand material continues to flow through the openings 53 and 54 into thecompartment 75 until the proper amount of material has been introducedinto such auxiliary chamber to move the scale pan whereby the movementof the said beam also moves the auxiliary arm 101 carried by the knifebar 78 which is provided with abutments 102 and 103 adapted when movedwith the scale beam 77 to engage the lower end 104 of a lever pivoted at105, the upper end of which engages a link 106 which in turn engages aclosure 107 beneath the openings and 54. The lever 104 is carried by anarm 104 extending outwardly from the base of the casing 23 and with areturn portion of such arm providing accommodation for pin for saidlever 104. It will thus be seen that when the scale beam ismoved byreason of the introduction of material into the auxiliary chamber 75,the abutment 102 will engage the lever 104 and move the closure 107 tocut off the further flow of material.

Upon the under side of the scale pan 39 which is normally openthroughout its entire area, are mounted rock shafts 108 and 109 towhich, respectively, are secured trap bottom closures 110 and 111 whichupon opening downwardly fall within chute 112 leading to the hopper 22.The rock shafts 108 and 109 are respectively provided with crank arms113 and 114 rigidly upstanding from the said shafts and communicatingrespectively by means of links 115 and 116 with a rocker 117 pivoted asat 118 to the scale pan and controlled by means of a stud 119 cugagedbetween the bifurcated ends 120 of a lever 121, carried also rigidlyupon the shaft 89 and operated therewith by means of the link 94 andassociated parts from the cam wheel 100. It will be noted that theinterval between the bifurcated ends 120 is considerably greater thanthe diameter of the stud 119 so that as the shaft 98 is moved a slightdistance under the impetus from the cam wheel 100, the scale beam 77 andthe stud 119 are simultaneously released from all contact, whereby thescale pan and its associated parts swing free from engagement, exceptthrough the medium of the regular knife edges adapted to support thesame and the 121 to raise it to the position shown at the ri ht-hand inFig. 4, which throws the rocker 11 7 out of locking position andreleases the trap bottoms 110 and 111 to discharge material into thechutes 112 and 112.

The scale is adapted to measure, weigh and discharge any predeterminedamount of material, such amount being definitely determined by fixingthe counterpoise or weight 84 at the desired position and a largepercentage of the material is discharged almost instantaneously into thescale pan by means of one of the semi-cylinders, the amount beingregulated by means of the slides 33 and 34 so that the material soinstantaneously discharged will approximate ninety or ninety-five percent. of the entire material, the remaining five or ten per cent. thenbeing made up by the limited discharge through the openings 53 and 54.

It will be understood that it is impossible to measure material in themanner described in the operation of the semi-cylinders to introduce theexact weight at each instance, so the mechanism is adjusted to dischargenearly the entire amount, but less than the whole amount in eachinstance, the remaining smaller portion being made up as described bythe flow through the auxiliary openings.

Upon the shaft 45 the cam wheel is mounted operating by means of thecrank arm 51 and segmental gear 52. The segmental gear 52 meshing withthe gears 28 and 29 move the shafts 20 and 27 and the semi-cylinders 24and 25 rotatably alternately in opposite directions. The material to beweighed is discharged tlirough the opening 31 in any approved manner andby the plate 32 is deflected toward the opposite ends of the casing 23.The controlling plates 33 and 34 determine how much of the material isadmitted to the semi-cylinders 24 and 25, such plates being movablevertically to control the opening between the chamber 30 and theopposite semi-cylinders. As the semi-cylinders oscillate under theaction of the segmental gear 52 the open side is alternately broughtinto position to receive material from the chamber 30 and over theopening discharging into the scale pan 39. In this manner the contentsof the semicylinder, when such semi-cylinder is rotated, is dumpedthrough such opening into the scale pan and w 1en such dumping is inprogress the closed side of the semi-cylinder closes the opening 21 andshuts ofit passage from the chamber 30. While one semi-cylinder isdischarging the other semteylinder is in position to receive a chargefrom the chamber 30.

It is intended to so regulate the plates 33 and 34 that a very largeportion of the material required is dumped from the semicylinder to thescale pan at each dump, but

as the material cannot be gaged accurately in such manner auxiliarymeans is provided in the openings 53 and 54. Above these openings theagitators 56 and 57 are journaled with the shafts 58 and 59 extendingupwardly through the top of the casing 23 and provided upon their upperends with gears 60 shown particularly in Fig. 2 which gears areintergeared with gear 61 mounted upon the shaft 62 and receiving motionfrom the shaft 63 as described. The gear 60 upon the upper end of theshaft 58 is not shown in Fig. 2 as it is covered by the segmental gear52 and the cam 44, but is similar in all respects to the gear 60 showingupon the top of the shaft 59. These agitators 56 and 57 are constantlyagitated to insure the passage of a smaller quantity of material throughthe passages into the auxiliary chamber 7 5 of the scale pan, suchauxiliary chamber is provided to prevent the discharge of material fromthe semi-cylinder filling the corner and preventing the free flow ofmaterial to the pan.

Beneath the openings 53 and 54 the plates 107 107 are mountedoperatively by means of the rods 106 connected with the lever 104.

Before the material is dum ed from the semi-cylinder the scale beam 7 islocked by means of a pin 88 bearing upon the upper side thereof toprevent the operation of said scale beam and the associated parts byreason of the impact of the material dumped. hen the material has beendumped the cam 100 operating in timed relation with the dumping movesthe link 97 and through the intermediate leverage operates the arm 93 sothat the fork 120 is moved upwardly a distance and the shaft 89 rotatedto such an ex tent that the arm 90 moves the bell-crank lever 87 tounlock the scale beam. Following or coincident with this the openings 53or 54 are opened and material discharged through said openings into thescale pan; 'When the exact weight required has been delivered to the panthe rising of the scale beam moves the integral lever 81 and theconnected lever 101 and the movement of the latter lever operates thelever 104 to close the opening 54 and cam 100 further moves the arm 93to unlock the hinged bottom comprising the winged sections 110 and 111permitting the material to drop into the chutes 112. It is to beunderstood that the unlocking of the hinged bottoms and the subsequentdumping of the contents is timed to allow the full weight to be made upby the auxiliary feed some time before the dumping takes place. As soonas the material isdumped the further rotation of the cam 100 operatingthrough the levers and links closes the winged sections 110 and 111,locks the scale beam 77, all as shown in Fig. 6, whereupon the device isready to receive another charge from the semlcylinders.

This constitutes one complete operation of the device and the rotationof the table carrying the bag is immaterial to the operation of themeasuring device and theweighing device, except that such operationbrings bags into proper sequence mounted upon their proper filling tubesbeneath the chutes 112.

hat I claim is 1. In a device of the class described, a scale embodyinga scale pan, bottom sections hinged at opposite edges of the scale pan,arms secured to the hinges of the bottom sections, a rocker carried bythe pan, links pivotally engaging the rocker and arms and arranged tolock the sections in closed position, means to actuate the rocker tounlock the sections, a scale, a scale beam, means to lock the scale beamin depressed position, means to discharge a predetermined quantity ofmaterial into the scale, means to unlock the scale beam following thedischarge of material, means to discharge a smaller quantity of materialinto the scale, and means actuated by the scale for shutting off theflow of material when the proper weight is reached.

2. In a device of the class described, a part rigidly supported andprovided with a knife edge, a frame carried partly upon the knife edge,a scale beam fulcrunied upon the rigidly supported part, means toconnect the scale beam and frame whereby the frame is supported partlyfrom the beam, a scale pan disposed within the frame, and meanspermitting a discharge of material from the pan.

3. In a device of the class described. a bracket rigidly supported andprovided with upstanding knife edges, a scale beam fulcrumed upon therigidly supported part, a frame supported partly upon the knife edges ascale pan disposed within and supported from the frame, means to lockthe beam against displacement, bottom sections hinged to the lower sideof the scale pan, and means to unlock the scale beam and the bottomsections.

4:. In a device of the class described, a casing, independentsemi-cylinders vertically journaled within the casing, a feed chamberdisposed adjacent the peripheries and in communication with thesemi-cylinders, movable means disposed between the chamber and thesemi-cylinders and adapted to close predetermined portions of theopenings, a scale, means to discharge material from the semi-cylindersinto the scale, and auxiliary feeding means disposed within the casingand arranged to feed small quantities of material to the scale.

5. In a device of the class described, a casing, means disposed withinthe casing for measuring and discharging large quantities of material, ascale disposed beneath the easing, a plate arranged to closecommunication between the casing and the scale, means to move the plateto permit discharge of the materialfrom the measuring device to thescale, auxiliary means for discharging small quantities of material fromthe casing to the scale all operatin automatically and in timedrelation, and means actuated by the scale for closing the auxiliarydischarge means.

6. In a device of the class described, a casing, a measuring devicedisposed within the casing and adapted to discharge a considerablequantity of material at one d scharge, a scale disposed beneath themeasuring means and adapted to receive material therefrom, auxiliarydischarge openings formedun the bottom of the casing and incommunication with the scale, agitators disposed within the casing andadapted to insure the continuous flow of material through the aipxiliaryopenings all operating automatically and in timed relation and meansactuated by V the scale adapted to close the auxiliary openm 7. In adevice of the class described, a scale pan, trap bottoms hinged to fheunder side of the said scale pan, a rock r adapted to lock the trapbottoms in closed positions, an arm adapted to release the fockel, andmeans for actuating the arm.

8. In a device of the class d'e'sci le' scale pan, trap bottoms hingedupon opposite edges of the scale pan, and meeting at the center, arocker pivoted to the scale pan, links connecting the rocker with and inas sociation with the said rocker to lock the said trap bottoms, apivoted arm adapted to actuate the rocker and release the trap bottoms,and means to actuate the arm.

9. In a device of the class described, a scale comprising a scale beamand scale pan, trap bottoms provided for the under side of the scalepan, a rocker pivoted upon the scale pan and adapted to lock the trapbottoms in closed position, means to lock the scale beam in depressedposition, and means to release the scale beam and the trap 'bottoms.

10. In a device of the class described, a scale comprising a scale beamwith a scale pan supported thereupon, trap bottoms provided for thescale pan, a rocker pivoted upon the pan and adapted to lock the trapbottoms in closed positions, an arm positioned to lock the scale beam indepressed position, and means to simultaneously actuate the beam andbottom locklng means.

11. In a. device of the class described, a scale comprising a scalebeam, a scale pan supported thereupon, trap bottoms provided for thescale pan, a rocker pivoted upon the scale pan and adapted to lock thetrap bot- -e iaase toms in closed positions, an arm adapted to Intestimony whereof I afiix my signature lock the scale beam in depressedposition, an in presence of two itnesses.

arm adapted to actuate the rocker means 4 adapted to release the beamlockihg and CHARLES C Y' rocker actuating arms simultaneously, andWitnesses:

means to move the rocker actuating arm a G. A. Woonnuw, further distanceto release the trap bottoms. I HENRY E. CURZON.

